Growth factor stimulation of proliferating cell nuclear antigen (PCNA) in human breast epithelium in organ culture
- 1 July 1991
- journal article
- Published by Wiley in Cell Biology International Reports
- Vol. 15 (7) , 561-570
- https://doi.org/10.1016/0309-1651(91)90003-2
Abstract
Normal human breast explants were maintained in serum-free culture for 7 days in the presence of either insulin hydrocortisone and cholera toxin (I/H/CT), epidermal growth factor (EGF) or transforming growth factor-alpha (TGF-alpha). Explants were labelled with [3H] thymidine, fixed in methacarn and processed for autoradiography. Parallel sections were immunolabelled with anti-PCNA antibody and analysed with a CAS 200 image analyser. Thymidine labelling index (TLI) and PCNA expression produced similar results with both indices increased in response to I/H/CT, EGF and TGF-alpha. In sections double labelled for PCNA and autoradiography the majority of labelled cells were positive for both markers.Keywords
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